Sand-molding apparatus



Patented. Jam.V 31, l1.888.

J.. ADAMS.

,II/III N. PETERS, PhMo-mhagnpher, wuhingmn, ma

(No Model.)-A

UNITED STATES s JAnvis ADAMS, E PiTTsBUEG, PENNSYLVANIA.

SAND-MOLDING `APPARATUS.

SPECIFICATION forming part of LettersPtent No. 377,006, dated January 31188.8.

Application liled March 31,'1187. I Serial No. 233.099. (No model.) Y

To al whom it my concern.'

Beit known that I, S. JARvIs ADAMS, of Pittsburg,in the county ofAllegheny and State of Pennsylvania, have invented a new and useful'Improvement in Sand-Molding Apparatus; and I do hereby declare `the.following to be a full, clear, and exact description thereof.

' medium of a rod or bar extending within the iiask,which rod or bar maybe connected With any suitable mechanism for applying the pressl ure tothe mold.V Y v To this end my invention consists,generally, in thecombination of a flask, a pattern or. patterns and pattern-block, apackingplate, arod,

. or like device extending within the flask, and

power connections engaging said rod and adapted, through said rod,..toimpart the compressing forcc to the sand within the ask and compact itaround the pattern. y

It also consists in certain improvements in the construction of theapparatus for support-- ing the parts andr arranging the iiask and itsconnections'for applying the compressing force to the sand containedtherein; .f

To enable others skilled in the art to make and use my invention, I willdescribe the same more' fully, referring to the accompanying drawings,in whichg Figure'l is a longitudinal central section of one form of myimproved apparatus, showing the invention Wherer the ilask, pattern, andpattern block or plates are moved,the packing-plate vbeing heldstationary. Fig. 2 is a view of the same apparatus, showing the po-"sition ofthe parts at the end of the movement of the apparatus informing the mold. Fig.

3 is a view of my improved apparatus where the flask and packing-plateremain stationary v f the'patternand pattern-plate are moved to andXcompact the sand Within the flask. Fig. 4 is a V like View showing -theposition of the parts when the mold is formed., Fig. 5 isa` likey"packing-plate is moved to compress the sand within the iiask; andFig.v6 shows my'invenrtion applied'to another formof mold.

Like letters of reference indicate likeparts in each of the lign-res. l.Y i The most approved form of myin'vention is illustrated in Figs. 1and 2, the flask arresting means ot' which -th`e compressing force is applied, extends `up through the pattern and above the flask. Y Restingupon the upper endilask proper in forming the mold, andttin'g within theupper part of' this reservoir-is the 'packingpla'te f, thispacking-plate havinga central 'opening through which the power-rod d'extends.

the rod g, which may be drawn up .by any suitable power mechanislmthatillustrated in g forming the piston-rod thereof, though any suitablemeans forjdrawing up the rod'g may be employed. The form of connectionbetween the rod d and the rod g shown" consists of av sleeve, s, fittingover'the end of the rod d and same, this key being adapt'ed'fto passthrough a suitable seat,d, in the upper end of the rod d.

In order to hold thepacking-plate f stationary during4 the compressingoperation, `I pro`- out in such lpositionthat when the flask is placedunder the power-rod g the lugs Z on the arms Z will engage the plate. fand prevent its rising. v

Inv this construction ofapparatus the operaf tion is as follows: The aska is placed, upon thepattern-plate b, the rod d extending `up iilask andreservoir lled with sand'. `v The upon thepattern plate or block l). towhich the,l pattern o' is secured, while the rod or bar d, by

the drawingsbeing a cylinder, g',`and the rod.

through the'flask. The reservoir e is then placed on the upper end ofthe ask, and the view ofthe apparatus Wherethe iiask,.the pattern, andits plate are held stationary and the ofthe ask agis the reservoir e, toprovide a f sufficient amount of sand -topress intothey This rod d has asuitable connecting device, by means of whchit is secured to having awedge-key, s', passing through the vide on the operating-table It thestandards k, having arms Z, provided with lugs lZ on kthe a f undersurface thereof, these arms extending IOO packingplatef isthen placedover the rod d, its edges fitting into the reservoir e, and the illedflask is then slipped under the powerrodg in such position that the lugsZ ot' the arms extend down and bear upon or iit closely to thepacking-platef. The rod d is then connected to the power-rod g, and thisrod g is drawn up, the rod at the same time lifting the ilask, thereservoir, the pattern-plate, and the pattern, while thepacking-platefis held from rising by the arms l, the sand within theflask being thus compressed and caused to pack closely and evenly aroundthe pattern, and the packing plate being forced down until its loweredge is about even with the lower edge of the reservoir e. When thiscompressing operation is finished, the flask is lowered down onto theoperatingtable h and the rod cl disconnected from the rod g. Thereservoir and the packing-plate are then removed, and the pattern, withits rod d, withdrawn from thev mold, and the mold is finished ready toreceive its core or cores, according to the shape of the articles to becast.

In Fig. 3 is shown the operation of the=ap paratus where the ilask.,reservoir, and packing-plate are held stationary, and in this case thereservoir e is placed upon the operatingtable, the pattern-plate bcarrying the pattern c, and the rod d resting also on the table, and thepattern-plate fitting within the reservoir. The flask a isthen placedupon the reservoir and the packing-platefplaced upon the flask andaround the rod d, the packing-plate in this case extending over theilask instead of fitting within it, as shown in Fig. l. Before placingthe packing-plate upon the flask, the flask and reservoir are filledwith sand, and the apparatus is then placed under the powerrod g, thearms Z on the standards kextending over the packing-plate 'tr/,though inthis case the lugs Z on the said arms are not required. The rod d isthen connected to the bar g, and

, the bar g drawn up, as above described, and

the pattern and its pattern-plate are drawn up with the bar, thepatterxrplate sliding within the reservoir e and forcing the sand upinto the flask proper, so causing it to' be uniformly compacted aroundthe pattern. The apparatus is then disconnected from the bar g, thepattern lowered, the reservoir removed, and the flask lifted off thepattern, thus forming the mold ready to receive the core.

In the apparatus shown in Fig. 5 the packing-plate and the rod d onlyare movable, the rod d sliding through the pattern or its plate,

which rests upon the table h, and an opening being formed in the table hto permit the passage of this rod. The flask a is placed upon thepattern-plate and the reservoir upon the upper end ot' the flask, andthe sand is filled within the ilask and reservoir. The packingplatefisthen placed in position over the rod d,'which has a suitable keyway, m,above the plate, through which a key, m', may be driven, so securing thepacking-plateto the rod, and the bar g, which, with its power apparatus,is

down the required distance and the sand properlycompaeted aroundthe'pattern, asis shown in dotted lines, the rod d is disconnected fromthe bar g, the key m driven out, the packingplate and reservoir liftedolif, and the flask lifted otf the pattern, or the pattern out of theflask, .as may be desired, leaving the finished mold ready to receivethe core.

In Fig. 6 my invention is illustrated in connection with apparatus forforming a nest of molds within the single tlaskVand in this casetheinvention is illustrated where the apparatus is employed Yin the samemanner as that shown in Fig. 1, differing onlyin that the rod g. fromwhich the power for compactiug the mold is obtained, instead ot passingup through one of the patterns, as in the other figures shown, leadsdirectly up from the pattern-plate, (this bein'gdesirable whereanestofmolds is formed,`) and that the rod d may be disconnected from thepatteru-plateand withdrawn by the power apparatus, the parts operatingin the same man ner as that described in Fig. 1, and in forming molds intwo-part -flasks the apparatus may be operatedin this manner, forming ahalf'mold in one flask and another half-mold in another ilask, and thetwo be placed together, as is well known in the art. The reservoir e mayin some casesbe dispensed with, though it is generallyconsidereddesirable to employ it, as it holds a body of sand proper to compressthe sand withoutforminga depression in the flask. This depression isnot, however, objectiona ble in all cases, because the depression mayeither be filled with a drag in certain classes of work or with asuitable bottom board; or where separate cope-prints are formed for eachmold a seat is thus provided for the core, and in such cases it is onlyrequisite that the flask be made slightly longer in order to hold a su fiicient body of sand for compacting.

In forming molds by my improved apparatus the power is applied tocompact 'the sand through the medium of a rod passing through the flaskand connected either to the pattern or to its pattern block or plate,and all that is necessary is to have some means for drawing this rod insuch manner as to compact the sand within the flask and around thepattern, this` power being applied to the flask in any of the waysdescribed, and acting in either case to form a perfect mold, and onewhich can he made by those who are unskilled in the formation of molds,while at the same time the complicated machinery heretofore considerednecessary in forming molds by pressing appara tus is entirely done awaywith.

What I claim as my invention, and desire to secure by Letters Patent, is

l. In apparatus for forming sand molds by compression, the combinationof the flask, a

A pattern-plate closing one end of said flask and IIO armoe4v v 7 searryinga pattern therein, a packing-plate in-l closing the other end, arod or like device exi tending within the laskand attached to one ofsaid-plates, and power-connections engaging said rod to compress thesand Within the Iiask, f

substantially as and for the purpose set forth. 2. In apparatus forforming sand molds by compression, the combination of a liask, a patternand its pattern-block, a packingplate, a rod or like device extendingWithin the ask and attached to said patternor pattern-block. andpower-connections engaging said rod and adapted through said rod toimpartthe compressing force to the sand Within'the iask,substantiallyfas and for the purpose set forth.

3. In apparatus for forming sand molds by compression, the combinationof a flask, the pattern and itsy pattern-block, a reservoir, vapacking-plate, a rod or like device extending Within the flask andattached to said pattern or patternblock,-and powerconnections engagingsaid rod and adaptedthrough said rod to impart the compressing force vtothe sand I within'the ask, substantially as and for the.

purpose set forth. 4 1^ I4.. In apparatus for formingsand molds bycompression, the combination of the pattern plate or blockcarrying the.pattern and having the red or like device extending through l,

the opposite end of t-'he'fiask" andv secured to said patternandpatternblock, the fiask rest-- ingon the patternfplate and thepacking-plate litting Within the askor its reservoir,`stand and `for thepurpose set forth.

, In testimony whereof L'h@ Said S- JARVIS l' l y* ADAMS, have hereuntos'et'my hand.

Y j l s l JARVIS ADAMs.

Witnesses: v

` JAMES I. KA'Y,

J. NEGLEY COOKE.y

